I use the nanoKontrol2 with the Edirol pc80..
The pc80 offers many features that are not found on any controller.But does not have assignable sliders and buttons, that is where the Korg nanoKontrol2 comes into play..

The combo runs Mixcraft Pro7, perfectly..
I also run effects from Mixcraft with the Mic input on the pc80.

I use the pc80 synth for my arranger software and SMF player..

One man band 11 is my current choice for arranger play..

Karawin pro is my midi sequence player and audio player too,,

All in all, it is great package set up, and does not crash..

The big weakness.....playing the keys...

Yamaha psr players won't mind the key feel...